我在Mic / Line In Audio Rendering Callback的末尾添加了以下代码。
但该应用程序在EXC_BAD_ACCESS上一直崩溃:
err = ExtAudioFileWriteAsync(mOutputAudioFile, inNumberFrames, ioData);
其余代码如下:
ExtAudioFileRef mOutputAudioFile;
AudioFileID mAfid;
NSLog(@"Writing output to file ....");
NSArray *dirPaths;
NSString *docsDir;
dirPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
docsDir = [dirPaths objectAtIndex:0];
NSLog(@"docDir = %@", docsDir);
NSString *soundFilePath = [docsDir stringByAppendingPathComponent:@"sound.caf"];
NSURL *inPath = [NSURL fileURLWithPath:soundFilePath];
NSLog(@"Output file path is : %@", inPath);
AudioStreamBasicDescription mStreamFormat;
mStreamFormat.mChannelsPerFrame = 1;
mStreamFormat.mSampleRate = 44100.00;
mStreamFormat.mFormatID = kAudioFormatLinearPCM;
mStreamFormat.mFormatFlags = kAudioFormatFlagIsBigEndian | kAudioFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
mStreamFormat.mBitsPerChannel = 16;
mStreamFormat.mBytesPerFrame = 2;
mStreamFormat.mFramesPerPacket = 1;
mStreamFormat.mBytesPerPacket = 2;
mStreamFormat.mReserved = 0;
err = AudioFileCreateWithURL((CFURLRef)inPath, kAudioFileCAFType, &mStreamFormat, kAudioFileFlags_EraseFile, &mAfid);
if (err != noErr) {
NSLog(@"ERROR : Audio file could not be created !! %d", (int)err);
}
err = ExtAudioFileWrapAudioFileID(mAfid, true, &mOutputAudioFile);
err = ExtAudioFileSetProperty(mOutputAudioFile, kExtAudioFileProperty_ClientDataFormat, sizeof(AudioStreamBasicDescription), &mStreamFormat);
if (ioData) {
err = ExtAudioFileWriteAsync(mOutputAudioFile, inNumberFrames, ioData);
if (err != noErr) {
NSLog(@"ERROR : Audio file could not be written !! %d", (int)err);
}
}
else {
NSLog(@"No ioData found");
}
NSLog(@"Done writing output to file ....");
我已经尝试了几乎所有的东西。如果有人能帮我解决,我会非常感激。谢谢!
更新1:
如果我使用ExtAudioFileWrite而不是ExtAudioFileWriteAsync,应用程序不会崩溃,但会为ExtAudioFileWrite返回错误-50。
我仍然不知道发生了什么。在这方面的任何帮助都非常感谢。
感谢。
答案 0 :(得分:0)
答案中公布的示例代码回答了我的所有问题:
Can anybody help me in recording iPhone output sound through Audio Unit
非常感谢大家的帮助。
答案 1 :(得分:0)
检查ioData.mNumberBuffers值。对我来说,尽管缓冲列表中只有1个缓冲区,但它被设置为2。这导致了EXC_BAD_ACCESS。